Hydraulic symbols
ISO 1219 hydraulic symbols grouped by component category. Open a group for details, or test yourself in the symbol trainer.
Lines and connections
How energy and control signals are routed in a hydraulic circuit diagram.
3 symbols →
Pumps and motors
The components that convert between mechanical and hydraulic energy.
3 symbols →
Valves
Directional control, pressure control and flow control valves that govern the system.
9 symbols →
Cylinders
Linear actuators that turn hydraulic pressure into motion and force.
4 symbols →
Energy transfer and conditioning
Reservoir, filter, cooling and accumulation that keep the fluid in good condition.
4 symbols →
Measurement
Instruments for pressure, temperature and flow.
3 symbols →
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